In a paint program create your object, example a little 2d spaceship of size 64x64 (could be any size really). In the paint program rotate the image through 45 degrees 7 times and paste each rotated image one after the other in an imagestrip. This would give you an image strip of 8 frames possibly of size 512x64. Then load it using the loadanimimage command and draw it using the drawimage command as normal.
http://www.blitzbasic.com/b3ddocs/command.php?name=LoadAnimImage&ref=2d_cat
http://www.blitzbasic.com/b3ddocs/command.php?name=LoadAnimImage&ref=2d_cat